#include <stdio.h>

int even(int n);

int main()
{
	int n;

	scanf("%d", &n);
	if (even(n))
		printf("%d is even.\n", n);
	else
		printf("%d is odd.\n", n);

	return 0;
}
int even(int n)
{
	if (n % 2 == 0)
		return 1;
	else
		return 0;
}